Padlock.



T. 0. MOE.

PADLOGK.

APPLICATION FILED SEPT. 24, 1912.

1,095,912, Patented May 5, 1914.

UNITED STATES PATENT orrron THORSTEIN O. MOE, OF CHRISTIANIA, NORWAY, ASSIG-NOR TO A/S DE FORENEDE NORSKE LAASE- & BESLAGFABRIKE-R, OF CHRISTIANIA, NORWAY.

IPADLOCK.

Specification of Letters Patent.

Application filed September 24, 1912.

Patented May 5, 1914.

Serial No. 722,153.

To all whom it may concern Be it known that I, THORSTEIN OLsnN Mon, a subject of the King of Norway, residing at Christiania, Norway, have invented certain new and useful Improvements in Padlocks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to padlocks of the type described in U. S. Pat. No. 988,127.

According to the present invention a simplification. of the locks is attained by the key directly actuating the bolt proper which are therefore provided with one or more disklike enlarged portions surrounding'the axle of the bolt and which are actuated at their lower edge by the key and provided, at or near their upper edge, with a shackle.

In the drawing Figure 1 shows the inside of one form of padlock in which the tumblers are pivoted on the bolt, and Fig. 2 the inside of the padlock in which the tumblers are mounted on a pin secured to the lock case.

In Fig. 1, 3 denotes the case of the lock, having a bolt 2 therein with its lower end forming a disk-like portion 1, said bolt pro vided with an arm forming a shackle. On this disk-like portion of the bolt are provided tumblers 5 pivoted on a pin 12 secured to the bolt, and provided with slots 6 for the pin 4 and slots 8 for the rectangular locking pin 7 secured to the case of the lock. The slots 8 as illustrated in the drawing may for each tumbler have a different width corresponding to the respective form of the key. The slots 8 are at each end provided with recesses 9 and 10 in which the pin 7 will engage when the lock is in its opened and locked positions respectively. The disk-like portion 1 of the bolt is provided behind the slot 8 with a corresponding slot which has however, no recess, as indicated in the drawing by the dotted'line 8' since it only turns on the central axle at. The tumblers, near the pins 12, are fixedly connected with the springs 11 the opposite ends of which engage a pin 15 secured to the bolt. The springs always tend to keep the recesses 9 and 10 respectively of the tumblers in engagement with the fixed pin 7. The enlargement 1 of the bolt is provided at its edge adjacent to the key 14 with a recess 13 in which the key will engage as soon as it has brought the tumblers out of engagement with the pin 7 the key on being rotated in the direction of the arrow actuating the bolt so as to open the lock. The portion of the edge of the enlargement 1 of the bolt, which is located between the recess 13 and the pin 12 has been given such a shape, that, when the bolt occupies its unlocked posltion, said portion can act as a cam for the bit of the key on rotation of the latter toward the enlargement 1. The result is that the locking of the bolt may be eifected by turning the bit of the key to the left as well as by turning the same to the right, as usual and furthermore that a continual rotation of the key in one direction only (from the right to the left) will result in alternate opening and locking of the bolt. The tumblers in both cases are brought out of engagement with the pin 7 in the manner described. Between the tumblers may suitably be interposed washers adapted to the different shapes of the bit of the key.

As will be understood from the above statements, all the movable parts of the lockmechanism are arranged on the inner disklike enlargement of the arc-shaped bolt so that the pin 12 as well as the pin 15 will be inaccessible from outside. The entire device, moreover, is characterized by its simplicity so that it can be cheaply and easily manufactored.

The construction of the lock illustrated in Fig. 2 is as follows: The inner disk-like portion 1 of the bolt 2, which is pivoted on the pin 4 secured to the case of the lock is provided with recesses 10 and 9. On the portion 1 of the bolt is provided a tumbler-arm 5 pivotally mounted on the pin 12 secured to the case of the lock, which tumbler arm is provided with a tooth 7 engaging the recesses 10 and 9 respectively of the enlargement 1 of the bolt thereby retaining the bolt in the unlocked or locked position respectively. The tumbler arm 5 is fixedly connected with one end of the spring 11 which always tends to turn the arm so as to make the latter engage in one of the recesses 10 or 9, when it is not raised by the key. The slot 6 is provided in the tumbler in order that the rotation of the latter may not be prevented by the pin at. The locking tooth 7 which extends inwardly from the tumbler 5, is released from its engagement with the bolt as on rotation of the key lt in the direction of the arrow the tumbler is raised directly by the key, whereupon the key will engage in the recess 13 of the bolt and turn the latter so as to bring it into locking position. On rotating the key in the opposite direction (against the direction of the arrow) the opening of the lock takes place in a similar manner, the tumbler arm being first raised and then the bolt turned back. Between the tumbler 5 and the bolt are interposed one or more washers 16 adapted to the different forms of key employed.

The several parts of the mechanism may of course be modified in various ways. Thus there may be provided more locking teeth 7 and likewise the latter may be provided on the bolt instead of on the tumbler and, in this case the respective recesses are provided in the tumbler.

\Vhat I claim is:

1. A padlock comprising an arm pivotally connected with the lock case, an arc shaped bolt extending from the outer end of said arm, a lock case having a gap across' which the said bolt may be moved when the said arm is swung on its center, a disk-like enlargement of the arm around its center, a pin upon which said arm is pivotally mounted a spring actuated member capable of a limited swinging motion and having aslot through which said pin passes, said slot forming a guide for the said pin and limiting the swinging movement of said spring actuated member and means whereby the bolt is locked to the spring actuated member.

2. A padlock comprising an arm pivotally connected with the lock case, an are shaped bolt extending from the outer end of said arm, a lock case having a gap across which the said bolt may be moved when the said arm is swung on its center, a disk-like enlargement of the arm around its center, a spring actuated member capable of a limited swinging motion on a pivot mounted on the bolt, a slot in the bolt arm, a corresponding slot in the spring actuated member, a lock ing pin mounted on the lock case so as to project through said slots and notches in the slot of the spring actuated member corresponding with the said locking pin.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

THORSTEIN O. MOE.

Witnesses A. E. GUTTonMANN, SIGNE Bon.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. 0. 

